/Engine/Source/Developer/SkeletalMeshUtilitiesCommon/Public/LODUtilities.h
Regenerate LOD that are dependent of LODIndex
static void RegenerateDependentLODs ( [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * SkeletalMesh, int32 LODIndex, const class [ITargetPlatform](API\Developer\TargetPlatform\Interfaces\ITargetPlatform) * TargetPlatform )